在Bootstrap中创建列表组标题
要创建列表组标题，请在Bootstrap中使用.list-group-item-heading 类。
您可以尝试运行以下代码来实现.list-group-item-heading类-
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class = "container">
<h1>Countries</h1>
<ul class = "list-group">
<li class = "list-group-item">
<h3 class = "list-group-item-heading">Asia</h3>
<p class = "list-group-item-text">India</p>
<p class = "list-group-item-text">Nepal</p>
</li>
<li class = "list-group-item">
<h3 class = "list-group-item-heading">Europe</h3>
<p class = "list-group-item-text">Germany</p>
<p class = "list-group-item-text">Italy</p>
<p class = "list-group-item-text">Spain</p>
</li>
</ul>
</div>
</body>
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